221422001503452 has 12 divisors (see below), whose sum is σ = 516651336841416. Its totient is φ = 73807333834480.

The previous prime is 221422001503441. The next prime is 221422001503487. The reversal of 221422001503452 is 254305100224122.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9225916729299 + ... + 9225916729322.

It is an arithmetic number, because the mean of its divisors is an integer number (43054278070118).

Almost surely, 2^{221422001503452} is an apocalyptic number.

It is an amenable number.

221422001503452 is an abundant number, since it is smaller than the sum of its proper divisors (295229335337964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221422001503452 is a wasteful number, since it uses less digits than its factorization.

221422001503452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18451833458628 (or 18451833458626 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 221422001503452 its reverse (254305100224122), we get a palindrome (475727101727574).

The spelling of 221422001503452 in words is "two hundred twenty-one trillion, four hundred twenty-two billion, one million, five hundred three thousand, four hundred fifty-two".